Dump car



Feb. 6, 1940. J, p. ANDERSON 2,189,336.

DUMP CAR Filed Sept. 6, 1929 5 Sheets-Sheet 1 Feb. 6, 1940. J. P. ANDERSON DUMP CAR Filed sept. 6, 1929 5 Sheets-Sheet 2 INVENTOR W ATTORNEY Feb. 6, 1940.` J. P. ANDERSON DUMP CAR Filed Sept. 6, 1929 5 Sheets-Sheet 3 Feb. 6, 1940.

J. P. ANDERSON Filed Sept. 6, 1929 5 Sheets-Sheeil 4 ATTORNEY Feb. 6, 1940. J, R ANDERSQN 2,189,336

DUMP GAR Filed sept. e, 1929 5 Sheets-sheet 5 INVENTOR ATTORNEY outward and downward with Patented Feb. 6, 1940 v UNITED STATES DUMP CAR John P. Anderson, Koppel, Pa., assigner, by mesne assignments, to Pressed Steel Car` Company, Inc., Pittsburgh, Pa., a

` Sylvania corporation of Penn- Application September' 6, 1929, Serial No. 390,731`

27 Claims.

invention relates to dump cars of the type having doers .forming the walls of the body and being hinged adjacent the floor thereof to open a means for maintaining the inactive door closed when the body moves in dumping. Another object of my invention is to mount the door mechanism entirely on the body and control the door by vthe tilting'body moving the mechanism into engagement with the car under- '.Frame. l Referring now to the drawings: Fig. 1 shows en end oi a car partly in 'section embodying my invention; Fig. 2 is a section taken longitudinally ofthek car body along the lines 2-2 of Fig. l showingr the provision at the ends of the body for the movement of the door mechanism whenthebody is tilted; Fig. 3 is a trans-r verse section through the car body and underi'rame, showing a means for supporting car body on the underirame; Fig. l is a transverse section through `thecar with the door mechanism and cooperating parts of theunderfram'e being shown by full lines, andthe body in tilted position by f dot and dash lines Fig. 5 is a transverse section through a car body and underframe rembodying f modincation Aof my invention; Fig. 6 is a par--` l tial plan view of the door mechanism in its relation to the car body; Fig. '7 is a partial `plan View of the door mechanism in its relation to the car'underirame; Fig. 8 is a section through the doormechanism along the lines 8-,8 of Fig. 5; Fig. 9 is a section through the car underframe i along the lines 9--9 of Fig. 6; Fig. l0 is a transverse section through the car with the body in fully tilted position and in dot and dash lines,

l and resultant position of the door mechanism shown by full lines. f

Referring now to the drawings in which like ings to either side of the underframe. The side l walls of the car body are formed by doors G mounted on hinges l adjacent the licor of the the tilting of theV flater described. i

The car body as described is designed to diss' `the door '5. moves transversely ofthe underframe and 'in body and opening outwardly and downwardly'at the side towards which the body is tilted. The

(c1. ins- 276) p i *w end walls of the body are made rigid andin two parts comprising a substantially vertical, por@ tion `8 and an inwardly sloping portion 9 which is secured to the licor of the body. The spaces between the portions 8 and 9 of the `end` walls areprovided to permit movement of the door mechanism whenthe body is tilted as will be' charge the lading tothe side of the underframe but it is to be understood that the door mechanism, to be later described, can be used equally N longitudinally of the body instead of transversely as stated in the following description.

'The door mechanism comprises a member l0 pivotally mounted intermediate its ends on a member il!4 secured to the body. Oneend loi the member Il! is connected to a link member l2 mounted on a downwarddepending portion of The other end of the member l engagement therewith to control the movement or" the sidedoor during the vdumping and righting oa car body. Pivotally mounted on the member lil and extending transversely of the body is a locking member I3 which engages with the stop member I6 to lock the door in closed position when the body is in load carrying position and to, maintain the inactive door closed when in an elevated position as the body is tilted.

A transversely extendingportion M of the underframe has mounted thereon adjacent its ends, stop portions l which are adapted to engage with the locking member I3 and about which the locking member rotates in controlling the movements of the inactive door. The body portion *ofr the member M also. provides a track on which the member I0 moves, as the body is tilting, to control the movement of the discharging door. The membersl are in line longitudinally of the car underframe with the bearings il so that thev rotation of the members I3 about those members will'be `simultaneous and in the same plane of rotation as that of the body rotat-` ing on its trunnions in the bearings 4.

Dump cars of the type illustrated and described usually have a mechanism mounted on the underframe and operated by fluid pressure or other convenient means for tilting the car body. Those body tilting mechanisms form no 55 A part of my invention and have not been illustrated in the drawings but may be of any form adapted to the particular car under. construction and known in the art.

Referring now to Figs. 1 and 4 of the drawings in which the car body is shown in load carrying position and in fullytilted position respectively,` I will nowdescribe the action of the door mechanism it moves to control the discharging door as the body moves from load carrying position to fully tilted position. With the body as shown in Fig. i `and the doors in closed position, the member IG is held in position by the Weight of the body and lading and maintains the member I2 in position to form acompression lock between the member Ill and the downwardy depending portion of the car door 5,

v The locking members i3 are also held in engagen of the underframe, by Whatever means employed, the rst part oi the tilting movement carriesl the door mechanism on the left side of the body l .upwards away from the underframe until. the

. AI5 on the left side of the underframe.

member I5 moves clear of the member I3 which still remains in engagement with the member At such `time the member I3. is engaged by a projection .ofthe pin 23 of the member Il, or any other convenient support mounted on the bodyand with the continued tilting of the body the member I3 moves out of engagement with the member I5 to permit the rotation of the member It `on the right side of the body. The locking member I3 secured to the member lo mounted on the. left side of the Acar `body rotates about` the Amember I5 mounted on the right side of the vunderframe andv is prevented from moving transversely of the underframe by means of a stop member I6 mounted on -tlie car body. Since v the n'iember` i5 and the bearing l for the body' are in the same line longitudinally of the underlframe, the member i3 secured to the inactive or rising door on the left sideof the body and the door mechanism maintain the same relation to the car body as they did when the body was vhorizontal and thus prevents the inactive door Afrom opening. On the right side of the body the discharging door moves downwardwith the body .and in closed position, to break the compression lock between member II! and the'depending por-- ytion of the door 6, and the door opens by .gravity and the weight thereon of the lading being discharged. This opening movement of the discharging door causes the portion of the member `Il) adjacent the door to move upwardly and to move and hold the downwardly moving portion of themember iii into engagement withthe unn derframe. This engagement of the member iii with the underframe controls the opening movee ment of the discharging door with the tilting Amovement of the car body, so that when the body has reached its maximum tilting angle the dis-v rest on the underframe the locking member I3 secured to the active door mechanism engages with the member i 5 mounted on the underframe and with the stop It mounted on the car body to lock the door mechanism into` position and prevent accidental opening of the door.

A Referring now to Figs. 5 to 10 inclusive of the drawings in which is shown a car embodying a modification of my invention. lReference character il' indicates a car body supported directly on the underframe and having trunnions I8 mounted on the body but free of the underframe when the body is horizontal. Bearings I9 mounted on the underframe are engaged by the trunnions i8 after the body has rotated about the under-frame to bring the'trunnions into contact with the bearings and from such time until the final demping position is reached the body pivots about the underirame in the bearings I9 as previously described. This method of mounting the body is described in my cci-pending application, Serial No. 357,557, led April 23, 1929 issued as Fatent No. 2,683,136. In this modication of my invention, the individual members of the door mechanism are the same as those for a trunnion supported car with slight modifications to adapt them to arolling trunnion dumping car and the door locking mechanism maintains the door in closed position until the trunnions I8 engage with their respective bearings at the sides of the underframes. From `this point until the car has reached fully tilted position and during the return of the body to a horizontal position with the underirame, the action of the individual members of the door mechanism is the same as previously described. The/members 2B correa spend to the members I2 previously described and the pivotally mounted members ZI correspond to the pivotally mounted members lo in the preierred embodiment of the invention. The lock I ing members 22 correspond to the locking member I3 and control the members 2i in the same manner as the members I3 previously described control the members ill.

Having thus described .the invention what I f claim as new and desire to secure` by Letters Patent is:

l. In a dump car, an underframe, a body tiltably mounted on saidunderframe, side doors for said body hinged adjacent the door thereof, -1-

a door controlling mechanism mounted on the body adjacent each side door for holding the door in closed position when the body is hori- Zontai and positively-closing the `door when the dumping, and a locking member extending transversely of the underframe having one end in engagement with the opposite side of the underfrarne, and the other end secured to its respectivel door operating mechanism, member maintaining the door operating mechanism in position, as the body tilts towards the opposite side of the underframe, to hold the inactive door closed.

2. In a dump car, an underframe, a dump body tiltably mounted on said underframe in stable equilibrium, side doors for said body hinged adjacent the rloorthereof, downward depending members on said doors, a member pivotally mountedintermediate its ends to the body, a link member connecting one end of said pivotally mounted member and the adjacent downward depending door member, the other end of said -pivotally mounted memberbeing in engagement with the underfrarne and moving transversely -body is returned to an upright position after said locking 1 o forming Walls thereof when in closed position,

` .iinderframa thereof when its respective `door Vopens lby gravity rwith the tilting lof .the car body, land a blocking member having one end in engagement Withsa'id 3; In a dump car, an underframe, adump body mounted `directly on the `underframe in stable `equilibrium, 'trunnions at each side of the body :and free of the underframe when the body is horizontal, said trunnions engaging 'with the unf derframe after the body begins 5to itiltandforming pivots about which the body turns incompleting the dumping movement, side doors for said body lhinged adjacent the floor .thereon-independent -door operating mechanisms for ea'cliside door pivotal'ly mounted :on the body adjacent its respective door, said door mechanism :beingforced into engagement with the underirame when the :body is `horizontal and when .its respective door is opening and `closingrvith the tiltingand righting movements of the body and moving `out of engagement with the underframe when the body is dumping towards the opposite side ofthe underframe, and la member pivotally mounted on each door operating :mechanism and extending across the underframe to engage withy the undertil'tably mounted on said underirame, doors on said body hinged adjacent the floor thereof `and 'downward depending members `on said doors, an operating mechanism foreach side `.door1p,io/'otally mounted on the `body adjacent its respective door, said `door operating mechanism holding :its respective door in closed positions/'hen the body is horizontal and releasing .the door foropening Hby gravity asthe body tilts towards the adjacent `'side of the underframe in vdumping and posi-V tively closing saiddoor as the body isrighted,

and a member mounted on each said door oper-V ating mechanism and extending across the ,underframe to engage with the underframe and body to maintain its respective door locked in` closed position as the body tilts about the undery to lock the respective doors in closed positionv when the body isl horizontal to limit the opening ofthe descending door as the body is tilted, and

Yto return said door to a closed position when the body is righted, and a member mounted on f said door controlling member and engaging with the underframe to maintain said door controlling member in door locking position as the adjacent side of the body moves aivay from the underirame in dumping.

6. In a dump car, an underframe, a body tiltably mounted on said underirame and tilting to either side in dumping, side doors for said body 'engagement with portions of the underiram'e.

hinged adjacent the floor" thereofand a door operating mechanism `.mounted on the tbody independent of the underframe, said 'mechanism comprising a member mounted on the bodyso as to permit its `partial rotation on `an axis intermediate its ends,` a connection between one end of said member and the 'adjacent side doorjsaid 4mechanism being controlled by the tilting movementsof the car body moving said member 'into "7. In `a dumpcar, an underframe, a tilting body, doors forming the sides of said body and opening outwardly and downwardly as the lbody is` tilted, a member mountedv on said body adjacent each side'door for controlling 'its 'respective door as the body tiltsabout the adjacent side of the underframe in dumping, a member .mounted on said door member and extending :across the underframe to detachably engage therewith adjacent the'` side thereof, said transverse member `when in engagement with the underirame conon the body below 'the door thereof and adjacent each side door and normally engaging the unj derframe, said mechanism comprisinga member pivotally mounted, intermediate its ends, on said body and link connected at one end tothe door to form a compression lock between said door and said body controlled by engagement of the free end of the member With the adjacent side .of the underframe, and a member mounted on said pivotally mounted member and extending .across the underirame `to engage Withthe opposite side of said body and underframe,said `n'iernberholding the attached door mechanism in door lockingposition when said mechanism is out of engagement with said underfra-me.` 9; In la dump car in combination, an underframe,` a body tiltably mounted thereon for lateral dumping movement about each side thereof,

doors forming the sides of said body and hinged `adjacent the door thereof, an operating mechanism for each', door and mounted onsaid body l adjacent its respective door, said mechanism concontrolling the movements of its attached door mechanism when said mechanism is out of engagement with the underframe.

10. In a dump car in combination, an under- -frame, a body tiltablyjmounted thereon for lateral dumping movement "about either side thereof,

, side doors for said body hinged adjacent the floor thereof, said body rolling transversely of the uny derframe during its initial tilting movement then pivoting about a trunnion mounted adjacent the side of `said body, a door operatingmechanism for f each side door mounted on said body below the door thereof, said mechanism engaging with said underfraineto control `the movements of its rcspectivedoor and moving transversely of the underframe during thev4 transverse movement of the body. f j V ll. In a clump car incombination, an underirame, a bodytiltabiy mounted thereon, doors for saidbodyhinged adjacent the door` thereof,

a door operating mechanism pivotally mounted 7,5

d io

be i

' adjacent their respective doors, said mechanisms controlling 'the movements 'of their respective doors through engagement with said underframe, means connected with said door operating mechanism and the opposite side of the body for `controlling said doors when the adjacent side of the body is out of engagement with the underframe.

13. In a dump car, an underframe, a body tiltably mounted thereon for dumping movement about the sides of said underframe, said body moving transversely of the underframe during the initial tilting movement and then pivoting about a trunnion mounted on said body and bearing on said underframe, doors for said bodyA hinged adjacent the floor thereof, independent mechanismsffor each side door for automatically and selectively controlling the opening and closing movementsthereof as the body tilts about the adjacent side of the underframe, said mechanisms including a member extending across the underframe and engaging with the opposite side of saidbody. e 14. In a dump car in combination, an under,- frame, a` dump body, side doors on said body, hinged adjacent the iioor thereof, independent mechanisms mounted on the body adjacent each i door for automatically and selectivelycontrolling the respective doors as the body rmoves indumping about the adjacent side cf theeunderframe and means connected to the mechanisms and extending transversely of the underframe to a selective engagement with the opposite side thereof.

15. In a dump car in combination, an underframe, a dump body, oppositely disposed doors on said body, hinged adjacent the floor thereof,

' a member pivotally mounted on the body adjacent each door, the inner end of the member having a bearing on the underframe, the outer end of the member being connected to the adjacent door kand a member pivotally mounted upon the first mentioned -member and selectively engaging the opposite side of the underframe.

16. In a dump car in combination,k an underframe, a body supported in stable equilibrium on said underframe, trunnions on said body spaced outwardly of the normal body supports, the body turning on the trunnions in dumping, a side door for the body hinged adjacent the floor thereof and a door controlling mechanism, said mechanism comprising an'inner member pivotally mounted on the body, an outer member pivotally mounted on the door and a pivotal connection between the inner and outer members.

17. In a dump car in combination, an underframe, a body supported in stable equilibrium on saidV underframe, trunnions on said body spaced outwardly of the normal body supports, the body turning on the trunnions in dumping, a side door for the body hinged adjacent the oor thereof and a door controlling mechanism, said mechanism comprising an inner member pivotally mounted on the body, an outer member pivotally mounted on the door and a pivotal connection c 2,189,336 'on the ends'of saidbody adjacent each door,

between the members, the inner end of the inner member selectively engaging with the underframe. y

18. In a dump car in combination, an underframe, a body mounted thereon in stable equilibrium, oppositely disposed doors for the body hinged adjacent the floor thereof, trunnions on said body `spaced outwardly of the normal `body supports, the body turning on the trunnions in dumping, and a door controlling mechanism for each door, said mechanisms comprising a member pivotally mounted on the body adjacent each door, a link connection between each of the members and their adjacent door and a member pivotally mounted on the body member and eX- tendingtransversely of the underframe to selectively engage with the opposite side thereof.

19. In a dump Vehicle, an Luiderframe, a body, laterally spaced supports on the body and underframe for retaining the body instable equilibrium,` trunnions spaced laterally of the supports upon which the body turns in dumping, side doors for the body hinged adjacent the iioor thereof, independent mechanism for each door, controlling the opening and closing of the door as the body turns about an adjacent side of the underframe, eachmechanism including a member extending across the underframe to releasably engage therewith as the body tilts about the side of the underframe opposite its respective door mechanism to retainits associated door 'in closed position.

20. In a dump vehicle, an underframe, a body, laterally spaced supports on the body and underframe for retaining the body in stable equilibrium, trunnions spaced laterally of the supports upon which the body turns in dumping, doors forming side walls of the body and hinged adjacent the oor thereof, independent mechanisms for each door'mounted on the body for movement relative to the bodyl and underframe to control the opening and'closing of the adjacent door as the body moves in dumping about the adjacent side of the underframe, each mechanism including'a member extending across the l underframe for engagement therewith to control the associated door mechanism when the body tilts about the opposite side of the underframe.

2'1. In a dump vehicle, an underframe, a body, tiitable about either side of the underframe upon laterally spaced trunnions, doors forming the side walls of the body and hinged adjacent the floor thereof, independent mechanisms for each door being mounted on the body adjacent each door to control the opening and closing movement of the door as the body moves about the adjacent side of the underframe in dumping, each mechanism including a'member extending across the underframe to hold its respective door closed as the body moves in dumping about the opposite side of the underframc and a support on the body for said member when out of engagement with the underframe as its respective door opens and closes during dumping.

22.`In a dump vehicle, an onderh-ame, a tiltably mounted body, doors forming side walls of the body and rhinged adjacent the fioor thereof to open-outwardly, a mechanism associated with each door mounted on the body to control the opening and closing movements of the door as the body moves in dumping about the adjacent sides of the underframe, said mechanism including a member pivotally mounted on the body for movement relative to the underframe and body when the body moves in dumping about the adjacent 23. Ina dump vehicle, an underframe, a body tiltable on laterally spaced trunnions, doors forming side walls of the body and hinged adjacent the floor thereof, a mechanism mounted on the body adjacent each door for controlling the movements thereof as the body moves in dumping, each mechanism including a member mounted on the body inwardly ofthe adjacent trunnion for movement relative to the body and underframe to releasethe door for opening movement proportionally `to the tilting movement of the body throughout the major portion of the movement of the latter" orto remain closed Without injury to door or mechanismand means pivotally connectedto said member and to the opposite side of the underframe for holding the member iixed relative to the body asthe body tilts about th opposite side of the underframe.

24. In a dump vehicle, an underframe, a body tilting to either side of the underframe about laterally spaced trunnions, doors for each side of the body and hinged adjacent the oor thereof, a member pivotally mounted intermediate its ends upon the body `and inwardly of the adjacent trunnion, a link connection between the outer. endV of the'member and the adjacent door below the hinge mounting thereof, a bearing for the inner end of the member upon the underframe, said body cooperating with the underframe and acting through the member to control the door associated with the member through movement l of the body about the side of the underframe adjacent the door and means associated with the opposite side of the underframeand member for controlling the door when the body is tilting about thev opposite side of the underframe.

25. In a dump vehicle,'an underframe, a body, laterallyspaced supports on the body and underframe maintaining the body in stable equilibrium, said body tilting to either side of the underframe ,A upon trunnions spaced laterally `oi" the body supports `and inactive when the body is horizontal, doors forming side walls of the body and hinged adjacent the floor of the latter, a door control mechanism including 'a member mounted intermediate its ends upon the body and having its outer end associated with the door below its hinged connection, a bearing for the inner end of the member upon the underframe, said member acting to limit the opening movement of the door proportionatelyto the relative movement of the body when tilting about the adjacent side of the underframe in dumping, to force the closing of the door as the body is righted and by movement relative to the body permit the closing of the door independently of the body movement, and a member associated with said mechanism and the opposite side of the underframe to retain `the door in closed position when elevated above the undertilting about either side ofthe underframe, doors forming walls of the body and opening outward 10` frame asthe body tilts to the opposite side of and downward as the body is tilted, a door op- ,g

erating mechanism for each door includinga member pivotally mounted on the bodywith its opposite ends associated Awith thedoor and uni vder-frame respectively, and a second member having one end mounted on the first member for movement relative `Athereto and its opposite end `selectively engaging the opposite side of the underframe to control its associated door when the body is out of engagement with the side of thel righted, each mechanism including an arm pivoted intermediate its ends and supported by the body, a link connection between one end of the arm and the adjacent door below its hinged connection to the body, a bearing engagement between the free end of said arm and the underframe, said arm being free to move away from the underframe during all positions of the tilting body, and a member associatedwith said arm and the opposite side of the underframe to control movement of the arm relative to the body whilst the body is tilting about the side of the underframe opposite from the door controlled by said arm.

JOHN P. ANDERSON. 

